package com.sky.service.impl;

import com.alibaba.druid.sql.PagerUtils;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import com.sky.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import java.nio.file.CopyOption;
import java.time.LocalDateTime;
import java.util.List;
import java.util.Objects;

@Service
@Slf4j
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;


    @Autowired
    private HttpServletRequest servletRequest;

    @Autowired
    private JwtProperties jwtProperties;
    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //  后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     *
     * @param employeeDTO
     */
    @Override
    public void saveEmployee(EmployeeDTO employeeDTO) {
        String password = DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes());

        String jwt = servletRequest.getHeader("token");
        Claims claims = JwtUtil.parseJWT(jwtProperties.getAdminSecretKey(),jwt);
        Object o = claims.get("empId");
        log.info("当前用户id：",claims.getId());
        Employee employee = Employee.builder()
                .id(employeeDTO.getId())
                .username(employeeDTO.getUsername())
                .name(employeeDTO.getName())
                .phone(employeeDTO.getPhone())
                .sex(employeeDTO.getSex())
                .idNumber(employeeDTO.getIdNumber())
                .password(password)
                .build();


        employeeMapper.savesaveEmployee(employee);
    }

    /**
     * 员工分页查询
     *
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.page(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /**
     * 修改密码
     *
     * @param passwordEditDTO
     * @return
     */
    @Override
    public Result editPassword(PasswordEditDTO passwordEditDTO) {
        passwordEditDTO.setEmpId(BaseContext.getCurrentId());
        Employee employee = employeeMapper.getById(passwordEditDTO.getEmpId());
        if(Objects.isNull(employee)){
            return Result.error(MessageConstant.ACCOUNT_NOT_FOUND);
        }else {
            String password = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
            if(!password.equals(employee.getPassword())){
                return Result.error(MessageConstant.PASSWORD_ERROR );
            }else {
                String newPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
                Employee employee1 = new Employee();
                employee1.setPassword(newPassword);
                employee1.setId(employee.getId());
                employeeMapper.editPassword(employee1);
                return Result.success();
            }
        }
    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        //密码脱敏
        employee.setPassword("****");
        return employee;
    }

    /**
     * 启用、禁用员工账号
     *
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        //修改员工状态
        employeeMapper.startOrStop(status,id);

    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employeeMapper.update(employee);
    }
}
